This allele from project TCPR0506 was generated at The Centre for Phenogenomics by injecting Cas9 mRNA and four guide RNAs having spacer sequences of CCATTCGAGAGGTAAGGATG and ACAGTAGGCTTGCCTTGGGC targeting the 5' side and GGGACAGACGTTAAGTAAAA and TTGCTTCAGGTTAGCTCAGC targeting the 3' side of a critical region. This resulted in a 699-bp deletion of Chr13 from 112996485 to 112997183 (GRCm38).